Annual Percentage Yield Calculator
APY = ((1 + r/n)^n − 1) × 100
Convert a nominal annual rate to an effective annual yield with regular compounding.
Formula
APY = ((1 + r/n)^n − 1) × 100
Worked example
Nominal annual rate: 5 %
Compounding periods per year: 12
With these inputs, the result is 5.11618979 %.
How to use this calculator
- Identify the quantity you want to calculate.
- Enter your measurements in the units shown on each field.
- Read the result, which updates as you change the inputs.
- Check the assumptions below before applying the result.
Assumptions and limits
Use a whole positive number of compounding periods. Promotional rates and fees are excluded.
Precision and checking
Results are rounded for display. Use the most accurate measurements available, and avoid rounding your inputs unnecessarily. Extra decimal places in a result do not make an estimate more reliable.
To check a result, substitute the same input values into the formula shown above. Change one value at a time to understand how the quantity responds.
Frequently asked questions
What assumptions does this calculation use?
Use a whole positive number of compounding periods. Promotional rates and fees are excluded.
Are my inputs sent to a server?
No. The calculation runs locally in your browser. The result updates as you edit the inputs.
Sources & references
- Compound Interest Calculator — U.S. Securities and Exchange Commission
